Rail-block for furnaces



G. J. RENNIE;

RAIL BLOCK FOR FURNAC APPLICATION FILED APR. 14, 1919. 1,341,928! i z bin; Mp W V I i \w x FFHQE.

GEORGE J. IRENNIE, or BUrrALo, new YORK.

Specification of Letters Patent.

RAIL-BLOCK FOR FURNACES.

Patent-ed June 1, 1920.

Application filed April 14, 1919. Serial no 'esaese.

To all whom it may concern Be it known that I, Gnomes J. RENNIE, acitizen of the United States of America, residing in the city ofBuffalo, county of Erie, and State of New York, have invented new anduseful Improvements in Rail- Blocks for Furnaces, of which the followingis a full, clear, and exact description.

It is well known, that in re-heating furnaces, it has been foundnecessary to provide water-cooled supports for the tracks or rails ofthe furnace, which are interposed between the tracks and masonry of thefurnace. These supports have heretofore been constructed in one pieceand built into the side walls of the furnace. By this construction, theentire support must be replaced when any portion of it has been burnedout, and replacement, in this form of support, necessitates the tearingout of portions of the side walls of the furnace.

Furthermore, when a single-piece support is used, the large exposedsurfaces of the support act as cooling surfaces to the heat of thefurnace, and the heating effect of the furnace is thereby greatlyreduced. This makes it necessary to supply an increased number of heatunits in order to bring the furnace up to the required temperature.

The general object of my invention has been to provide a water-cooledsupport made in email, separate units or rail blocks, which 7 can bereplaced individually without the ne cessity of tearing out the walls ofthe furnace.

Another object has been to provide a sirl individual rail block whichshall alall the heat units of the furnace to be conserved, and, at thesametime, provide sufiicient cooling surface to amply protect themasonry of the furnace.

Anotherobject has been to provide rail blocks which shall be used inpairs, the blocks of each pair being arranged opposite each other, withsuitable piping connecting the rail blocks together and to the outsidesurface of the side Walls of the furnace. Thus spreading of the tracksor rails is effectively prevented in a simple and efficient manner. 4The above objects and advantages have been accomplished by the deviceshownin the accompanying drawings, of which:

Figure 1 is a fragmentary, side elevation of a reheating furnace,showing my rail support in use.

Fig. 2 is a transverse, sectional elevation of the same.

Fig. 3 is an enlarged, perspective view of one of my rail blocks.

In the drawings, 5 represents the furnace having a top 6, a bottom 7 andside walls 8. 9 are masonry abutments, which rest upon the floor 7 ofthe furnace and which carry my rail blocks. i

Each of my rail blocks comprises a body 10 preferably made of cast steeland cored 'out so as to provide a chamber 11. A boss 12 is provided ateach side of the block, and this is screw-threaded for thereception ofsuitable pipe, wnereby water may be conducted to and from the blocks. Inthe upper face of each of the blocks is provided a concave surface 13,which furnishes a cradle for the reception and support of one of thetracks or rail 14 of the furnace. The upper edgesof the block arechamfered off so as not to interfere with the passage of the heat.

The blocks are arranged opposite each other and preferably in pairs andare connected together by suitable piping 15. A suitable source of watersupply may be connected at 16, and a suitable drain 17 is provided forcarrying off the water.

It is obvious that the water supplied at 16 will be forced through thepipes 15 and through the chambers 11 of the blocks, whereby the chamberswill be kept comparatively cool, and thus preserve the supportingsurface of the brick work of the furnace. V

lVhile I have shown but one pair of supports, it is obvious that thesupports are arranged at suitable intervals throughout the length of thefurnace.

Having thus described my invention, what I claim is:

1. The combination with a furnace, of a plurality of rail blocks, eachcomprising a hollow body, each side of each block being provided with athreaded pipe connection, and pipes connectingoppositely arrangedblocks, whereby a cooling fluid may be conducted through the blocks.

2. The combination. with a furnace, of a plurality of rail blocks, eachcomprising a hollow body, provided with a cooling chamber and threadedpipe connections, and pipes connecting oppositely arranged blocks,whereby a cooling fluid may be conducted through the blocks.

3. The combination with a furnace, of a plurality of rail blocks eachcomprising a blocks, each comprising a hollow body, each 7 hollow body,provided with a cooling chamside of each block being provided with a berand threaded pipe connections, the up threaded pipe connection, andpipes conper face of the body being concave for the necting oppositelyarranged blocks, where- 5 reception of the tracks of the furnace and bya cooling fluid may be conducted through 15 pipes connecting oppositelyarranged the blocks. blocks, whereby a cooling fluid may be con- Intestimony whereof I have hereunto ducted through the blocks. signed myname.

4. The combination with a furnace, of a 10 plurality of individuallysupported rail GEORGE J. RENNIEJ

